Not really, it's not that much work. See how Sebart mounts the Hacker inrunner.

It is heavier, but also has more power. The Hacker A50 lacks power.

With A50 my WindS weighs, all up, 4kg. So with the AXI it would weigh 4kg and 80 grams. I don't think that will be any problem.

The Axi swings a 19x12 prop at higher RPM than the A50. The A50 swings an 18x10 max. 18x12 if it's cold outside.